ASTM_D_7601_-_19.pdf

Designation:D760119Standard Practice forPressure Driven Membrane Separation Element/BundleEvaluation1This standard is issued under the fixed designation D7601;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers the inspection,performance testing,autopsy,and analytical work associated with evaluating pres-sure driven membrane separation elements(microfiltration(MF),ultrafiltration(UF),nanofiltration(NF),and reverseosmosis(RO).1.2 This practice is applicable for elements when newlymanufactured or at any time during their operation in a watertreatment facility.The Analytical section(6.4)covers onlymembrane surface and foulant analyses.1.3 The data derived from these tests should be evaluatedversus newly manufactured elements/bundles or against oper-ating systems when they were initially brought on-stream,orboth.Industry norms can also be used for comparative pur-poses.1.4 The values stated in inch-pound units are to be regardedas standard.No other units of measurement are included in thisstandard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1129 Terminology Relating to WaterD3923 Practices for Detecting Leaks in Reverse Osmosisand Nanofiltration DevicesD4194 Test Methods for Operating Characteristics of Re-verse Osmosis and Nanofiltration DevicesD4472 Guide for Recordkeeping for Reverse Osmosis andNanofiltration SystemsD4516 Practice for Standardizing Reverse Osmosis Perfor-mance DataD5090 Practice for Standardizing Ultrafiltration PermeateFlow Performance Data(Withdrawn 2016)3D6161 Terminology Used for Microfiltration,Ultrafiltration,Nanofiltration,and Reverse Osmosis Membrane ProcessesD6908 Practice for Integrity Testing of Water FiltrationMembrane SystemsD7285 Guide for Recordkeeping Microfiltration and Ultra-filtration Systems3.Terminology3.1 Definitions:3.1.1 For definitions of terms used in this standard,refer toTerminologies D1129 and D6161.4.Summary of Practice4.1 This practice discusses the inspection of the pressuredriven membrane separation elements required for individualunits to be readied for a visual inspection or an autopsy that canbe performed to ascertain structural integrity(Practice D6908)and cleanliness.Visual inspection is non-destructive testing;autopsy requires the dismantlement of the element.4.2 Performance testing of an element are discussed that canbe accomplished on or off line,in a single or multi-elementhousing under conditions proscribed by the user or element1This practice is under the jurisdiction of ASTM Committee D19 on Water andis the direct responsibility of Subcommittee D19.08 on Membranes and IonExchange Materials.Current edition approved July 1,2019.Published July 2019.Originally approvedin 2010.Last previous edition approved in 2010 as D7601 10,which waswithdrawn January 2019 and reinstated in July 2019.DOI:10.1520/D7601-19.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 manufacturer or Test Methods D4194.The data collected(Guides D4472 and D7285)must then be normalized(PracticesD4516 and D5090)to a set of conditions that permit theelements performance to be compared to an as-new unit.4.3 Laboratory analyses are presented that include visual,usually non-destructive,as well as specialized instrumentation,usually destructive testing.5.Significance and Use5.1 Water treatment membrane devices can be used toproduce potable water from brackish supplies and seawater aswell as to upgrade the quality of industrial water.This st